Finding the Third Proportional to 12,399.50 and 25,459

Step by Step Solution

1. Step 1: Write the proportion equation
   12,399.50 : 25,459 = 25,459 : x
2. Step 2: Convert to fraction form
   12,399.50/25,459 = 25,459/x
3. Step 3: Cross multiply
   12,399.50x = 25,459 × 25,459
4. Step 4: Simplify right side
   12,399.50x = 648,160,681
5. Step 5: Solve for x
   x = 648,160,681/12,399.50
6. Step 6: Final answer
   x = 52,273.13